词语运用。用方框中所给的单词的适当形式填空，使短文正确，通顺。每词限用一次。

relax,    watch,    between，    Can，    Oneself,     spend,    learn,    friend,    dad,    channel

    My hobby is watching TV.  It becomes an important part of my life. I____ two hours a day watching TV. When lying on the sofa and clicking the remote control(遥控器). I feel quite ____ .Sometimes , I even wish I ____ be a couch potato(电视迷)  all my life.

    I began to watch TV in my childhood, and soon I lost ____ in it . Because I could keep balance ____ my hobby and my schoolwork, my parents didn't insist that I turn off the TV. My favorite ____ is Discovery and my favorite show is about history . I have ____ many things from it, and it even becomes and affair (事情). That I  can share with my ____. When I feel upset, watching a variety of shows ca make my ____ disappear. 

    I will keep ____ .TV and learning things from it. TV is not only a tool to make my life colorful, but also a friend to accompany(陪伴) me by my side.

下图为甲、乙、丙、丁四种限制酶的辨识序列。箭头表示每一种限制酶的特定切割部位，其中哪两种限制酶切割出来的DNA片段末端可以互补?其正确的末端互补序列是（   ）

如图为原核生物某基因控制蛋白质合成的示意图，下列叙述正确的是（　　）

下列各句中，成语使用恰当的一项是……………………………（  ）

阅读下文，回答问题露珠赞
    我喜欢露珠，我赞美它。
    夏日的清晨，我来到野外散步。在万道霞光中，一个美妙的、崭新的世界便（显出  呈现  出现）在我眼前。看！那无边的绿叶上，闪动着无数颗晶莹的露珠，一颗、两颗、十颗……啊！像夜空中璀璨的繁星，像碧波上撒满了宝石，又像千百万闪光的眼睛。啊！露珠！这就是极普通而又为人们所喜爱的露珠。
    露珠的身体很小，生命也很短暂，但它却是不平凡的。当夜幕笼罩的时候，它像慈母用乳汁（教育  哺育  培育）婴儿一样地滋润着禾苗；每当黎明到来的时候，它又最早睁开那不知疲倦的眼睛；它白天隐身于空气中，夜晚无声辛勤工作。它不像暴雨那样挟风裹电以（夸耀  显耀  炫耀）它的威力，不像冰雹那样对一切（残酷  残忍  残暴）无情。它把短暂的一生献给树木、庄稼……而对它们却无所苛求。它多么像辛勤的园丁，培育花朵；多么像我们敬爱的老师，伏在桌边灯下夜以继日地工作，把全部心血洒在我们心田……
        我爱露珠，它比珍珠更珍贵，比宝石更晶莹，比群星更璀璨。我赞美它。露珠精神将永远在我心头闪动。